Baptisa-Also called false indigo for the rich blue shade of its flowers, this hardy perennial fills the spring garden with elegant spires of pealike blooms. It withstands drought -- and deer, rabbits, and other critters leave it alone.
The Hardiest of Hardy Perennials. Generally speaking, a plant is classified as a perennial if it can survive to Zone Above that range, plants become tender perennials or annuals. For the purpose of this article, we will only consider the "hardiest" of
Fringed Gentian (Gentianopsis crinita) is a biennial herbaceous species, native to eastern USA and eastern Canada. Fringed gentian flowers open on sunny days, but generally remain closed on cloudy days. Individual plants live for only one or two years